Aquatilavipes

Aquatilavipes is an early bird known only from its footprints, which are modern looking (not reptilian like Archaeopteryx). It lived during the early Cretaceous period, about 130 million years ago; these are the oldest-known bird tracks. Fossil footprints have been found in Canada.
Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
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